Duration of insolation
Daylight duration refers to the total length of time over a specified period, be it day, week, month or years. Sunshine duration refers to the duration of sunlight over a given period of time.
It is called the "Equinox" and occurs during the winter season.
squat-thrust
It is called an equinox.
A traveler moving north on this date observes that the daylight period becomes shorter at the date of : December 21
It is called a subduction zone.
They have daylight and night.
collaborate focus
Yes they are equal because equinox means equal nights.
The longest days are in mid-June. June 21 is the very longest day. This is true of any location in the northern hemisphere.
Photosynthesis occurs in the chloroplasts.
Yes, if expansion occurs.